Well i wanted to be able to generate around 1-2 Mhz but think I can work with 50k.
I want to use a series of shift registers to dim Leds individually,using the nano to supply a clock and latch signal, ideally with:
255 levels of dimming
200Hz refresh rate
For 32 leds this would need
255*200*32 = approx 1.6 Mhz
for testing I can use 1 8 bit register at 200Hz with about 30 levels of dimming at 50kHz, so no problem there.
I haven't checked the forums very well but has this been done before, and if so is there code for this floating around? I am really after guidance on a simple iphone interface for this!